<!DOCTYPE html>
<html>
<head>
<link rel="author" title="Vitor Roriz" href="https://github.com/vitorroriz">
<link rel="help" href="http://www.w3.org/TR/css-fonts-3/#font-size-adjust-prop">
<style>
html {
    margin: 0;
    padding: 0;
}
body {
    font-family: system-ui;
    font-size: 100px;
    font-size-adjust: 0.528;
    border: 0;
    padding: 0;
    margin: 0;
    height: 200px;
    width: 200px;
}
</style>
</head>
<body>
    <div id="target">A</div>
</body>
</html>
